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Well, who knew? It's not even a month since the General Election and the lies deployed by Keir Starmer and his cronies in order to win it are already being unveiled thick and fast.

I know, I'm as shocked as you are, which is to say, not remotely shocked at all. Who could have imagined that a man who had lied his way into the leadership of the Labour Party would lie his way into Downing Street? Just about anyone who had been paying attention, that's who.

Let's start with a great big lie which is, on the scale of Labour whopperdom, merely a picnic snack sized pork pie.

Starmer has been backtracking on the claim loudly made during the General Election that his Government would save households £300 a year on their energy bills.

Starmer insisted he was determined to reduce costs as he announced that the new state-owned Great British Energy firm will partner with the Crown Estates, which owns the seabed up to 12 nautical miles off the coast, to help speed up building off shore wind farms, but Downing Street pointedly refused to reiterate the £300 figure touted during the election campaign.

It now looks as though the only household which is set to benefit financially from GB Energy before 2030 is the royal household, which will rake in millions of pounds of public money in licencing fees on top of the £45 million pay rise announced for the Windsors this week.

As he unveiled as drive for more offshore wind development, Starmer did not repeat the £300 figure, telling reporters he stood by Labour's manifesto, which did not include that specific figure.

I don't recall Labour telling us during the election campaign that if elected they'd vote to retain the two-child cap on benefits but would boost the already bloated bank accounts of the king by millions of pounds from public funds, but that is precisely what they've done.

Labour has easily got the votes it needs in Westminster to pass legislation to nationalise the seabed within the UK's territorial limit, obviating the need to strike a financial deal with the grasping Windsor clan and giving them vast sums of public cash, but that's not even on Starmer's radar.

A change from forelock tugging and scraping and bowing before the greedy royals was not part of the change that Starmer had in mind.

Energy Secretary Ed Miliband has admitted that it could take five years or more before GB Energy – the new state-funded investment vehicle branded as an energy company – starts to turn a profit and contributes to a reduction in energy bills.

But the energy saving lie, huge as it is, pales into insignificance compared with the news that the Chancellor Rachel Reeves is about to reveal a £20 billion hole in public finances.

Upon taking office Reeves ordered officials in the Treasury to undertake a spending audit and on Monday she is due to announce the results, which look set to be even worse than the worst forecasts made before the election.

Prior to the election, the SNP warned that Starmer's refusal to countenance tax rises on the wealthy would mean there would be a black hole of some £18bn in public spending which could only be made up by tax rises, which Labour has ruled out, or a new round of austerity. This figure was based on an analysis from the Institute for Fiscal Studies (IFS).

The Labour Party angrily denied this, and Anas Sarwar put on his best sneery face and accused the SNP of "scaremongering." Labour has continued to deny that it will either increase taxes or implement a fresh round of public spending squeezes.

Despite this, the party is not denying reports that an early assessment by Treasury officials has identified a nearly £20bn annual gap between revenues and funding commitments, including in areas such as asylum and public sector pay. This figure could potentially increase as each government department's spending commitments are assessed before the Chancellor's Commons statement on Monday.

The SNP's Westminster leader Stephen Flynn has now written to Rachel Reeves demanding that she and the Labour Party apologise to voters for misleading them during the recent General Election campaign.

While the black hole in public funding is squarely the fault of the Conservative Party, Labour knew about it during the General Election campaign but chose to lie, insult and belittle parties like the SNP which were warning about it. That was a blatant and brazen lie on the part of Keir Starmer and his party.

In his letter to Rachael Reeves, Stephen Flynn wrote: "At minimum, you should apologise for misleading voters, if Labour's election campaign was a product in a shop, voters would be due a refund for false advertising."

He added: "More importantly, you must now come clean on where the axe will fall under your plans and whether you intend to cut public services, raise taxes or both - having previously denied you would do either.

“People in Scotland voted for change and that means an end to fourteen years of Westminster austerity cuts, a meaningful funding boost to our NHS and public services, action to eradicate child poverty and raise living standards - and infrastructure investment to boost economic growth and deliver affordable homes, quality transport links and our green energy future.

“Will you now give a cast-iron commitment that there will be no cuts to public services, as you promised at the election, and that public services will get the major funding boost they need at the budget in October? Or will you break your promise and allow public services to decline?"

The Chancellor is expected to announce how she proposes to tackle the £20bn shortfall when she unveils her first budget in the autumn. It is widely expected that she will be forced to raise taxes.